95ec0cf21e
Run all linters per package. It allows unloading package data when it's processed. It dramatically reduces memory (and CPU because of GC) usage. Relates: #337
58 lines
1.4 KiB
Go
58 lines
1.4 KiB
Go
package golinters
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import (
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"fmt"
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"sync"
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"github.com/golangci/prealloc"
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"golang.org/x/tools/go/analysis"
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"github.com/golangci/golangci-lint/pkg/golinters/goanalysis"
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"github.com/golangci/golangci-lint/pkg/lint/linter"
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"github.com/golangci/golangci-lint/pkg/result"
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)
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const preallocName = "prealloc"
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func NewPrealloc() *goanalysis.Linter {
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var mu sync.Mutex
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var resIssues []result.Issue
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analyzer := &analysis.Analyzer{
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Name: goanalysis.TheOnlyAnalyzerName,
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Doc: goanalysis.TheOnlyanalyzerDoc,
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}
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return goanalysis.NewLinter(
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preallocName,
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"Finds slice declarations that could potentially be preallocated",
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[]*analysis.Analyzer{analyzer},
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nil,
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).WithContextSetter(func(lintCtx *linter.Context) {
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s := &lintCtx.Settings().Prealloc
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analyzer.Run = func(pass *analysis.Pass) (interface{}, error) {
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var res []result.Issue
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hints := prealloc.Check(pass.Files, s.Simple, s.RangeLoops, s.ForLoops)
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for _, hint := range hints {
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res = append(res, result.Issue{
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Pos: pass.Fset.Position(hint.Pos),
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Text: fmt.Sprintf("Consider preallocating %s", formatCode(hint.DeclaredSliceName, lintCtx.Cfg)),
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FromLinter: preallocName,
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})
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}
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if len(res) == 0 {
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return nil, nil
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}
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mu.Lock()
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resIssues = append(resIssues, res...)
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mu.Unlock()
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return nil, nil
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}
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}).WithIssuesReporter(func(*linter.Context) []result.Issue {
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return resIssues
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}).WithLoadMode(goanalysis.LoadModeSyntax)
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}
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